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Author:
chen mingchuan
GeoGebra
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兩位數除以一位數(二)
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
判斷球體
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直線方程點斜式的原理
對稱之美
除法Q4
固定三角形的條件−題5的副本
Quiz on Addition and Subtraction of Directed Numbers (1)
Discover Topics
Difference and Slope
Median Line
Pyramid
Integers
Ellipse